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dc.creatorDas, Pradip Kumar
dc.date.accessioned2012-06-07T22:36:00Z
dc.date.available2012-06-07T22:36:00Z
dc.date.created1994
dc.date.issued1994
dc.identifier.urihttps://hdl.handle.net/1969.1/ETD-TAMU-1994-THESIS-D229
dc.descriptionDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item.en
dc.descriptionIncludes bibliographical references.en
dc.description.abstractThe surface phonon dispersion curves and polarization vectors have been calculated for the (110) surfaces of nine Ill-V semiconductors. The results for GaAs are in generally good agreement with inelastic helium scattering and high-resolution electron energy loss spectroscopy measurements. We predict an additional acoustic branch along [ ]. For InP, we predict a prominent optical branch, in the gap between bulk acoustic and optical modes. The (110) surfaces of Ill-V semiconductors are the simplest of all semiconductor surfaces. Their atomic relaxations and electronic surface states are rather well understood. There have, however, been surprisingly few experimental studies of their vibrational properties, and ours in the first detailed theoretical interpretation. We find that the open, covalently-bonded structures of III-V semi-conductors lead to novel surface phonon branches that are not seen in more closepacked metallic and ionic structures. There are some parallels with SI(100) and Si(lll), but also differences because of the different surface geometries and the mass mismatch between cation and anion.en
dc.format.mediumelectronicen
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherTexas A&M University
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en
dc.subjectphysics.en
dc.subjectMajor physics.en
dc.titleSurface phonons of III-V semiconductorsen
dc.typeThesisen
thesis.degree.disciplinephysicsen
thesis.degree.nameM.S.en
thesis.degree.levelMastersen
dc.type.genrethesisen
dc.type.materialtexten
dc.format.digitalOriginreformatted digitalen


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